Rotary screen cleaner for conical and cylindrical screens



.Aug. 21, 1928.

F. M AULIFF ROTARY SCREEN CLEANER FOR CONICAL AND CYLINDRICAL SCREENSFiled Oct. 1927 Patented Aug. 21, 1928.

UNITED STA FLORANCE MCAULIFF, OF MANDAN, NORTH DAKOTA.

ROTARY SCREEN CLEANER FOR CONICAL AND CYLINDRICAL SCREENS.

Application filed October 3, 1927. Serial No. 223,692.

The present invention relates to a rotary screen cleaner for conical andcylindrical screens and aims to provide a device which Will prevent theclogging up of interstices of a toraminous rotary scree such as used inapparatus for cleaning and asserting gravel, rock, and the like.

An important object of the inventlon re: sides in the provision of ascreen cleaner or this nature which is simple in its construction,inexpensive to manufacture, strong and durable, thoroughly eilicient andreliable 1n operation, and otherwise Well adapted to the purpose forwhich it is designed.

With the above and numerous other objects in view as Willappear as thedescription proceeds, the invention resides in certain novel features ofconstruction, and in the combination and arrangement of parts as will behereinafter more fully described and claimed. 7

In the drawings z- Figure 1 is a fragmentary side elevation of the frameof a machine on which are mounted rotary screens showing one of mycleaners in position,

Figure 2 is atop plan view thereof,

Figure 8 is an end elevation partly 111 section of one of the cleaners,and,

Figure 4 is a fragmentary longitudinal section. through one end of thecleaner.

Referring to the drawing in detail, it will be seen that the numeral 5denotes the frame structure of a gravel and sand Washing plant with arotary conical screen 6 mounted therein in the usual Well known manner.I provide a pair of standards 7 rising from the frame 5 and havingmounted on their upper ends a hinge pin 8. A pair of arms 9 have hingestraps 10 rotatably engaged on the hinge pin 8 and these arms are bracedin respect to each other by cross braces 11. Bearings 12 are carried bythe arms and have rotatable therein a shaft 14 on Which my improvedrotary cleaner is mounted. This cleaner comprises a drum 15 of sheetmetal rolled so to be circular in cross section as is clearly indicatedin Figure 4, the longitudinal ends being bent inwardly as at 16 andsecured together and the transverse ends being bent inwardly to formannular flanges 17. Spiders 18 have their ends secured to the flanges 17and are fixed to the shaft 14 by means 01 set screws through which theshaft 1 extends and in.

which the said screws 15 are mounted; The drum may be of suitableformation and is shown herein by \vayot' example as of a frusto-conicalformation so as to operate with a frusto-conical screen, but of course,mayv be cylindrical to conform properly with a cylindrical screen. Theroller bears against the screen of its own Weight andmay be readilyswung out of the Way as will be readilyapparent. force oi the son whenthe same is in rotation sinceit rests thereon andthe result is that thisroller will keep the screen clean at all times.

Heretoitore these screens have required the constant attention or a manor men to keep them open, that is, the irregularities of coarse sizes oirock, gravel, and the like, cause the various reel; or the like tobecome clogged in the screen With the result that unless they areconstantlyattended to the screen Will become This roller cleaner is runby the clogged and of course, cease to properly function, but with theuse ofthe roller cleaners this Will-be obviated. The structure of thecleaner is extremely simple as will be quite apparent and will operateWithout'any atten- 'tion. i I

The present embodiment of the invention has been disclosed in detailsince in actual practice it attains thefcatures of advantage enumeratedas desirable in the statement is shaft, spider structures on thesleeves, a sheet.

of metal disposed concentrically about the shaft having its longitudinaledges curved V inwardly and fixed together so that the sheet is clrcularin cross section, the ends of the sheet being bent 1nwardly to provideflanges of the sheet being bent inwardly to provide flanges, a shaftextending through the tubular sheet, and means connecting the shaft 19with the end flanges.

In testimony whereof I aflix my signature.

FLORANCE MCAULIFF.

